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Phenophases of blossoming and picking maturity and their relationships in twenty apricot genotypes for a period of six years

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  • Z. Vachůn

    (Mendel University of Agriculture and Forestry, Brno, Faculty of Horticulture, Lednice, Czech Republic)

Abstract

The phenophase course in a group of 20 apricot genotypes was evaluated in South Moravian conditions in Lednice, Czech Republic, from 1994 to 1999. The evaluated phases were as follows: "beginning of blossoming", "beginning of picking maturity" and "end of picking maturity". The aim was to evaluate the variability of these phenophases and their relationships. The amplitude of the phenophase "beginning of blossoming" did not exceed 9 days. The amplitude of phenophases between the different years was about three times higher than the average amplitude between the genotypes. The average amplitude of the factor "beginning of picking maturity" observed in all genotypes was 39 days, but a comparison between the years showed that the largest amplitude for a given genotype was only 16 days. No statistical correlation was found between the phenophases "beginning of blossoming" and "beginning of picking maturity" in any of the six observed years. The genotypes whose maturity occurs at the beginning or at the end of picking season showed higher year to year variability of the phenophase "beginning of picking maturity" than the genotypes maturing in the middle of the season. The rate of fruit development from blossoming to picking was considerably different depending on the apricot genotype. The number of days between the beginning of blossoming and the beginning of picking maturity was characteristic of each genotype. The variability of this interval for the six years was very low and the value of variation coefficients did not exceed 10%. This amplitude observed in the control variety Velkopavlovická LE-6/2 was on average 100 days. A very high statistically significant correlation (r = 0.996++) was observed between the intervals from the "beginning of blossoming" to the "beginning of picking maturity" and to the "end of picking maturity".

Suggested Citation

  • Z. Vachůn, 2003. "Phenophases of blossoming and picking maturity and their relationships in twenty apricot genotypes for a period of six years," Horticultural Science, Czech Academy of Agricultural Sciences, vol. 30(2), pages 43-50.
    • Handle: RePEc:caa:jnlhor:v:30:y:2003:i:2:id:3813-hortsci
    DOI: 10.17221/3813-HORTSCI
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